#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

typedef struct TreeNode
{
	int val;
	struct TreeNode* left;
	struct TreeNode* right;
}TreeNode;

void TreeBuild(char* arr,int* count)
{
	if (arr[*count] == '\0')
		return;

}

int main()
{
	char arr[101];
	int count = 0;
	scanf("%s", arr);
	TreeBuild(arr,&count);
}